Home / 68,986.40-103,479.60-57,322.40

Finding the Fourth Proportional to 68,986.40, 103,479.60 and 57,322.40

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Solution

The fourth proportional to 68,986.40, 103,479.60 and 57,322.40 is: 85,983.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,986.40 : 103,479.60 = 57,322.40 : x
  2. Step 2: Convert to fraction form
    68,986.40/103,479.60 = 57,322.40/x
  3. Step 3: Cross multiply
    68,986.40x = 103,479.60 × 57,322.40
  4. Step 4: Simplify right side
    68,986.40x = 5,931,699,023.04
  5. Step 5: Solve for x
    x = 5,931,699,023.04/68,986.40
  6. Step 6: Final answer
    x = 85,983.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.